VeEX MPA, User Manual

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SDH Tab
470
For the ITU Standards option, you can select the G.826/G.829 toggle button in the
lower-right corner of the ITU Standards error window to toggle the statistics between
G.826 and G.829 results.
Important: Select the G.826/G.829 button in the lower-right corner of the ITU
Standards window to toggle between G.826 and G.829 statistics. Toggling the Near
B2 Errors output also toggles the Far MS-REI Errors output.
This section is broken down into the following areas:
G.826 and G.829 Near B2 Errors
•
EB - Errored Block count. Reports an error count of incoming B2 errors.
•
BBE - Background Block Errors . Reports the number of the incoming B2
background block errors by count, rate percentage, and objective percentage.
•
ES - Errored Seconds. Reports the duration of the incoming B2 errored blocks
per seconds, the percentage of errored seconds compared to the duration of
error free seconds, and the objective percentage.
•
EFS - Error Free Seconds. Reports the duration of the incoming B2 error free
seconds and the percentage of error free seconds compared to the duration of
errored seconds.
•
SES - Severely Errored Seconds . Reports the duration of Severely Errored
Seconds (SES), rate percentage, and objective percentage on the incoming SDH
signal. An SES is reported when the number of B2 errored blocks per second
equals or exceeds either the
G.826 or G.829 MS SES Threshold (see table
below), or when an Out Of Frame (OOF) alarm, Loss of Frame (LOF) alarm,
Loss of Signal (LOS) alarm, or Multiplex Section - Alarm Indication Signal (MS-
AIS) alarm is present.
•
SEP - Severely Errored Period . A period of time during which at least 3 but not
more than 9 consecutive severely errored seconds (SES) occur. (G.829 only)
•
G.826 Allocation . Select an allocation percentage from 0 to 100.
•
G.826 Status . Pass, Uncertain, or failure
•
G.826/G.829 button. Select the command button to toggle between G.826 and
G.829 error statistics.
G.829 does not support allocation, objective percentages or status
G.826 and G.829 Far MS-REI Errors
•
EB - Errored Block count. Reports an error count of incoming MS-REI errors.
•
BBE - Background Block Errors . Reports the number of the incoming MS-REI
background block errors by count, rate percentage, and objective percentage.
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